如何使用 pyodbc 连接到 vertica
题
我读过 iODBC 文档 关于 odbc.ini
, ,以及 Vertica文档. 。我还看到一个问题 有同样的错误, ,但无法让连接字符串按照上一个问题的答案中的建议工作。
我目前拥有的:
/etc/odbcinst.ini
[HPVertica] Description = HP Vertica ODBC Driver Driver = /opt/vertica/lib64/libverticaodbc.so
/etc/odbc.ini
[ODBC Data Sources] VerticaDB1 = db1 database on HP Vertica [VerticaDB1] Description = db1 database on HP Vertica Driver = HPVertica Database = db1 Servername = 10.0.0.67 UID = dbadmin PWD = Port = 5433 Locale = en_GB [ODBC] Threading = 1
~/.odbc.ini
[DEFAULT] Driver = VerticaDB1
测试用 isql
[root@ip-10-0-0-67 /]# echo "select 1;" | isql -v VerticaDB1 +---------------------------------------+ | Connected! | | | | sql-statement | | help [tablename] | | quit | | | +---------------------------------------+ SQL> select 1; +---------------------+ | ?column? | +---------------------+ | 1 | +---------------------+ SQLRowCount returns 1 1 rows fetched
odbcinst -j
输出:
unixODBC 2.2.14 DRIVERS............: /etc/odbcinst.ini SYSTEM DATA SOURCES: /etc/odbc.ini FILE DATA SOURCES..: /etc/ODBCDataSources USER DATA SOURCES..: /root/.odbc.ini SQLULEN Size.......: 8 SQLLEN Size........: 8 SQLSETPOSIROW Size.: 8
在 Python 中使用“VerticaDB1”:
>>> import pyodbc >>> conn = pyodbc.connect("DRIVER={VerticaDB1};UID={dbadmin};PWD={...}") Traceback (most recent call last): File "", line 1, in pyodbc.Error: ('IM002', '[IM002] [unixODBC][Driver Manager]Data source name not found, and no default driver specified (0) (SQLDriverConnect)')
在 Python 中使用“HPVertica”:
>>> import pyodbc >>> conn = pyodbc.connect("DRIVER={HPVertica};UID={dbadmin};PWD={...}") Traceback (most recent call last): File "", line 1, in pyodbc.Error: ('HY000', '[HY000] [unixODBC][Vertica][ODBC] (10430) Not enough information provided to establish a connection to the data source and specified to not prompt for more information. (10430) (SQLDriverConnect)')
解决方案
尝试使用连接 DSN
:
conn = pyodbc.connect("DSN=VerticaDB1;UID=dbadmin;PWD=mypassword")
或者,您可以使用连接 DRIVER
, ,但您需要提供更多信息,例如哪个数据库、主机和端口:
conn = pyodbc.connect("DRIVER=HPVertica;SERVER=10.0.0.67;DATABASE=db1;PORT=5433;UID=dbadmin;PWD=mypassword")
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